﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace DongleTest
{
    class Convertor
    {
        /// <summary> 
        /// 字符串转16进制字节数组 
        /// </summary> 
        /// <param name="hexString"></param> 
        /// <returns></returns> 
        private static byte[] StrToToHexByte(string hexString)
        {
            hexString = hexString.Replace(" ", "");
            if ((hexString.Length % 2) != 0)
                hexString += " ";
            byte[] returnBytes = new byte[hexString.Length / 2];
            for (int i = 0; i < returnBytes.Length; i++)
                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
            return returnBytes;
        }

        //字节数组转16进制字符串 
        /// <summary> 
        /// 字节数组转16进制字符串 
        /// </summary> 
        /// <param name="bytes"></param> 
        /// <returns></returns> 
        public static string ByteToHexStr(byte[] bytes)
        {
            string returnStr = "";

            if (bytes != null)
            {
                for (int i = 0; i < bytes.Length; i++)
                {
                    returnStr += bytes[i].ToString("X2");
                }
            }
            return returnStr;
        }

        //从汉字转换到16进制 
        /// <summary> 
        /// 从汉字转换到16进制 
        /// </summary> 
        /// <param name="s"></param> 
        /// <param name="charset">编码,如"utf-8","gb2312"</param> 
        /// <param name="fenge">是否每字符用逗号分隔</param> 
        /// <returns></returns> 
        public static string ToHex(string s, string charset, bool fenge)
        {
            if ((s.Length % 2) != 0)
            {
                s += " ";//空格 
                //throw new ArgumentException("s is not valid chinese string!"); 
            }
            System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
            byte[] bytes = chs.GetBytes(s);
            string str = "";
            for (int i = 0; i < bytes.Length; i++)
            {
                str += string.Format("{0:X}", bytes[i]);
                if (fenge && (i != bytes.Length - 1))
                {
                    str += string.Format("{0}", ",");
                }
            }
            return str.ToLower();
        }

        //16进制转换成汉字 
        ///<summary> 
        /// 从16进制转换成汉字 
        /// </summary> 
        /// <param name="hex"></param> 
        /// <param name="charset">编码,如"utf-8","gb2312"</param> 
        /// <returns></returns> 
        public static string UnHex(string hex, string charset)
        {
            if (hex == null)
                throw new ArgumentNullException("hex");
            hex = hex.Replace(",", "");
            hex = hex.Replace("\n", "");
            hex = hex.Replace("\\", "");
            hex = hex.Replace(" ", "");
            if (hex.Length % 2 != 0)
            {
                hex += "20";//空格 
            }
            // 需要将 hex 转换成 byte 数组。 
            byte[] bytes = new byte[hex.Length / 2];
            for (int i = 0; i < bytes.Length; i++)
            {
                try
                {
                    // 每两个字符是一个 byte。 
                    bytes[i] = byte.Parse(hex.Substring(i * 2, 2),
                    System.Globalization.NumberStyles.HexNumber);
                }
                catch
                {
                    // Rethrow an exception with custom message. 
                    throw new ArgumentException("hex is not a valid hex number!", "hex");
                }
            }
            System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
            return chs.GetString(bytes);
        }

        /// <summary>
        /// 16进制字符串转byte数组
        /// </summary>
        /// <param name="hex"></param>
        /// <returns></returns>
        public static byte[] HexToByte(string hex)
        {
            if (hex == null)
                throw new ArgumentNullException("hex");
            hex = hex.Replace(",", "");
            hex = hex.Replace(":", "");
            hex = hex.Replace("\n", "");
            hex = hex.Replace("\\", "");
            hex = hex.Replace(" ", "");
            if (hex.Length % 2 != 0)
            {
                hex += "20";//空格 
            }
            // 需要将 hex 转换成 byte 数组。 
            byte[] bytes = new byte[hex.Length / 2];
            for (int i = 0; i < bytes.Length; i++)
            {
                try
                {
                    // 每两个字符是一个 byte。 
                    bytes[i] = byte.Parse(hex.Substring(i * 2, 2),
                    System.Globalization.NumberStyles.HexNumber);
                }
                catch
                {
                    // Rethrow an exception with custom message. 
                    throw new ArgumentException("hex is not a valid hex number!", "hex");
                }
            }

            return bytes;
        }

        /// <summary>
        /// byte数组转结构体
        /// </summary>
        /// <param name="bytes"></param>
        /// <param name="strcutType"></param>
        /// <returns></returns>
        public static Object BytesToStruct(Byte[] bytes, Type strcutType)
        {
            Int32 size = Marshal.SizeOf(strcutType);
            IntPtr buffer = Marshal.AllocHGlobal(size);

            try
            {
                Marshal.Copy(bytes, 0, buffer, size);

                return Marshal.PtrToStructure(buffer, strcutType);
            }
            finally
            {
                Marshal.FreeHGlobal(buffer);
            }
        }

        //将Byte转换为结构体类型
        public static byte[] StructToBytes(object structObj, int size)
        {
            byte[] bytes = new byte[size];
            IntPtr structPtr = Marshal.AllocHGlobal(size);
            //将结构体拷到分配好的内存空间
            Marshal.StructureToPtr(structObj, structPtr, false);
            //从内存空间拷贝到byte 数组
            Marshal.Copy(structPtr, bytes, 0, size);
            //释放内存空间
            Marshal.FreeHGlobal(structPtr);
            return bytes;

        }

        /// <summary>
        /// byte数组转名称
        /// </summary>
        /// <param name="bt"></param>
        /// <returns></returns>
        public static string ConvertToNameStr(byte[] bt)
        {
            string str = string.Empty;

            for (int i = 0; i < bt.Length; i++)
            {
                if (bt[i] > 47 && bt[i] < 123)
                {
                    str += (char)bt[i];
                }
            }
            if (str.Contains("Z"))
            {
                return "Z";
            }
            return str;
        }

        /// <summary>
        /// byte数组转物理地址字符串
        /// </summary>
        /// <param name="bt"></param>
        /// <returns></returns>
        public static string ConvertToAddrStr(byte[] bt)
        {
            string[] str = new string[bt.Length];
            for (int i = 0; i < bt.Length; i++)
            {
                str[i] = bt[bt.Length - i - 1].ToString("X2");
            }
            return string.Join(":", str);
        }

        /// <summary>
        /// 物理地址字符串转byte数组
        /// </summary>
        /// <param name="addr"></param>
        /// <returns></returns>
        public static byte[] ConvertToAddrBytes(string addr)
        {
            addr = addr.Trim();
            if (addr.Equals(string.Empty))
            {
                return new byte[] { 0, 0, 0, 0, 0, 0 };
            }
            string[] strAddr = addr.Split(new char[] { ':', ' ', '.' });
            byte[] bAddr = new byte[strAddr.Length];
            for (int i = 0; i < strAddr.Length; i++)
            {
                bAddr[i] = byte.Parse(strAddr[strAddr.Length - 1 - i], System.Globalization.NumberStyles.HexNumber);
            }
            return bAddr;
        }

        /// <summary>
        /// byte转为short
        /// </summary>
        /// <param name="bt"></param>
        /// <returns></returns>
        public static short BytesToShort(byte[] bt)
        {

            short a = (Int16)((Int16)bt[0] + (Int16)bt[1] * 256);//

            return a;
        }


    }
}
